While I did misunderstood the goal of your comment, sry for that, it still holds some truth and might be applied concept wise to what you meant.

Refusing to pay taxes is, as much as refusing to vote politically, a refuse to participate. Why should someone get a say in something that they refuse to be a part of?

We are on the same side, even if it's not directly obvious. You showed that with you second point. By voting with you wallet for corporations that fulfill your values, you choose to give them more power over other corporations that don't.

The same concept applies to voting politically. You give your vote to a party that fulfills your values over a party that doesn't.

I the real world not paying taxes is not an option, as much as it's not an option to not spend any money on any corporation, if your part of the society. We are able to choose in a given context, that for sure has its limitations.

Let's say your not happy with the possible options that you can vote for, be it a financial or a political vote, you are free to fill the niche you think is missing. Start being active politically or economically and if there are more people that think like you and act according to this, things can change.

But if nobody does this, things will definitely move in the direction of the values from people that do the things above.

There is the famous phrase. "Insanity is doing the same thing over and over again and expecting different results."